2 * Copyright (c) 2004 Mellanox Technologies Ltd. All rights reserved.
3 * Copyright (c) 2004 Infinicon Corporation. All rights reserved.
4 * Copyright (c) 2004 Intel Corporation. All rights reserved.
5 * Copyright (c) 2004 Topspin Corporation. All rights reserved.
6 * Copyright (c) 2004 Voltaire Corporation. All rights reserved.
7 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
8 * Copyright (c) 2005, 2006, 2007 Cisco Systems. All rights reserved.
10 * This software is available to you under a choice of one of two
11 * licenses. You may choose to be licensed under the terms of the GNU
12 * General Public License (GPL) Version 2, available from the file
13 * COPYING in the main directory of this source tree, or the
14 * OpenIB.org BSD license below:
16 * Redistribution and use in source and binary forms, with or
17 * without modification, are permitted provided that the following
20 * - Redistributions of source code must retain the above
21 * copyright notice, this list of conditions and the following
24 * - Redistributions in binary form must reproduce the above
25 * copyright notice, this list of conditions and the following
26 * disclaimer in the documentation and/or other materials
27 * provided with the distribution.
29 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
30 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
31 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
32 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
33 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
34 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
35 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
39 #if !defined(IB_VERBS_H)
42 #include <linux/types.h>
43 #include <linux/device.h>
45 #include <linux/dma-mapping.h>
46 #include <linux/kref.h>
47 #include <linux/list.h>
48 #include <linux/rwsem.h>
49 #include <linux/scatterlist.h>
50 #include <linux/workqueue.h>
51 #include <uapi/linux/if_ether.h>
53 #include <linux/atomic.h>
54 #include <linux/mmu_notifier.h>
55 #include <asm/uaccess.h>
57 extern struct workqueue_struct *ib_wq;
68 /* IB values map to NodeInfo:NodeType. */
77 enum rdma_transport_type {
81 RDMA_TRANSPORT_USNIC_UDP
84 __attribute_const__ enum rdma_transport_type
85 rdma_node_get_transport(enum rdma_node_type node_type);
87 enum rdma_link_layer {
88 IB_LINK_LAYER_UNSPECIFIED,
89 IB_LINK_LAYER_INFINIBAND,
90 IB_LINK_LAYER_ETHERNET,
93 enum ib_device_cap_flags {
94 IB_DEVICE_RESIZE_MAX_WR = 1,
95 IB_DEVICE_BAD_PKEY_CNTR = (1<<1),
96 IB_DEVICE_BAD_QKEY_CNTR = (1<<2),
97 IB_DEVICE_RAW_MULTI = (1<<3),
98 IB_DEVICE_AUTO_PATH_MIG = (1<<4),
99 IB_DEVICE_CHANGE_PHY_PORT = (1<<5),
100 IB_DEVICE_UD_AV_PORT_ENFORCE = (1<<6),
101 IB_DEVICE_CURR_QP_STATE_MOD = (1<<7),
102 IB_DEVICE_SHUTDOWN_PORT = (1<<8),
103 IB_DEVICE_INIT_TYPE = (1<<9),
104 IB_DEVICE_PORT_ACTIVE_EVENT = (1<<10),
105 IB_DEVICE_SYS_IMAGE_GUID = (1<<11),
106 IB_DEVICE_RC_RNR_NAK_GEN = (1<<12),
107 IB_DEVICE_SRQ_RESIZE = (1<<13),
108 IB_DEVICE_N_NOTIFY_CQ = (1<<14),
109 IB_DEVICE_LOCAL_DMA_LKEY = (1<<15),
110 IB_DEVICE_RESERVED = (1<<16), /* old SEND_W_INV */
111 IB_DEVICE_MEM_WINDOW = (1<<17),
113 * Devices should set IB_DEVICE_UD_IP_SUM if they support
114 * insertion of UDP and TCP checksum on outgoing UD IPoIB
115 * messages and can verify the validity of checksum for
116 * incoming messages. Setting this flag implies that the
117 * IPoIB driver may set NETIF_F_IP_CSUM for datagram mode.
119 IB_DEVICE_UD_IP_CSUM = (1<<18),
120 IB_DEVICE_UD_TSO = (1<<19),
121 IB_DEVICE_XRC = (1<<20),
122 IB_DEVICE_MEM_MGT_EXTENSIONS = (1<<21),
123 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK = (1<<22),
124 IB_DEVICE_MEM_WINDOW_TYPE_2A = (1<<23),
125 IB_DEVICE_MEM_WINDOW_TYPE_2B = (1<<24),
126 IB_DEVICE_MANAGED_FLOW_STEERING = (1<<29),
127 IB_DEVICE_SIGNATURE_HANDOVER = (1<<30),
128 IB_DEVICE_ON_DEMAND_PAGING = (1<<31),
131 enum ib_signature_prot_cap {
132 IB_PROT_T10DIF_TYPE_1 = 1,
133 IB_PROT_T10DIF_TYPE_2 = 1 << 1,
134 IB_PROT_T10DIF_TYPE_3 = 1 << 2,
137 enum ib_signature_guard_cap {
138 IB_GUARD_T10DIF_CRC = 1,
139 IB_GUARD_T10DIF_CSUM = 1 << 1,
148 enum ib_odp_general_cap_bits {
149 IB_ODP_SUPPORT = 1 << 0,
152 enum ib_odp_transport_cap_bits {
153 IB_ODP_SUPPORT_SEND = 1 << 0,
154 IB_ODP_SUPPORT_RECV = 1 << 1,
155 IB_ODP_SUPPORT_WRITE = 1 << 2,
156 IB_ODP_SUPPORT_READ = 1 << 3,
157 IB_ODP_SUPPORT_ATOMIC = 1 << 4,
161 uint64_t general_caps;
163 uint32_t rc_odp_caps;
164 uint32_t uc_odp_caps;
165 uint32_t ud_odp_caps;
166 } per_transport_caps;
169 struct ib_device_attr {
171 __be64 sys_image_guid;
179 int device_cap_flags;
189 int max_qp_init_rd_atom;
190 int max_ee_init_rd_atom;
191 enum ib_atomic_cap atomic_cap;
192 enum ib_atomic_cap masked_atomic_cap;
199 int max_mcast_qp_attach;
200 int max_total_mcast_qp_attach;
207 unsigned int max_fast_reg_page_list_len;
209 u8 local_ca_ack_delay;
212 struct ib_odp_caps odp_caps;
223 static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
226 case IB_MTU_256: return 256;
227 case IB_MTU_512: return 512;
228 case IB_MTU_1024: return 1024;
229 case IB_MTU_2048: return 2048;
230 case IB_MTU_4096: return 4096;
241 IB_PORT_ACTIVE_DEFER = 5
244 enum ib_port_cap_flags {
246 IB_PORT_NOTICE_SUP = 1 << 2,
247 IB_PORT_TRAP_SUP = 1 << 3,
248 IB_PORT_OPT_IPD_SUP = 1 << 4,
249 IB_PORT_AUTO_MIGR_SUP = 1 << 5,
250 IB_PORT_SL_MAP_SUP = 1 << 6,
251 IB_PORT_MKEY_NVRAM = 1 << 7,
252 IB_PORT_PKEY_NVRAM = 1 << 8,
253 IB_PORT_LED_INFO_SUP = 1 << 9,
254 IB_PORT_SM_DISABLED = 1 << 10,
255 IB_PORT_SYS_IMAGE_GUID_SUP = 1 << 11,
256 IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP = 1 << 12,
257 IB_PORT_EXTENDED_SPEEDS_SUP = 1 << 14,
258 IB_PORT_CM_SUP = 1 << 16,
259 IB_PORT_SNMP_TUNNEL_SUP = 1 << 17,
260 IB_PORT_REINIT_SUP = 1 << 18,
261 IB_PORT_DEVICE_MGMT_SUP = 1 << 19,
262 IB_PORT_VENDOR_CLASS_SUP = 1 << 20,
263 IB_PORT_DR_NOTICE_SUP = 1 << 21,
264 IB_PORT_CAP_MASK_NOTICE_SUP = 1 << 22,
265 IB_PORT_BOOT_MGMT_SUP = 1 << 23,
266 IB_PORT_LINK_LATENCY_SUP = 1 << 24,
267 IB_PORT_CLIENT_REG_SUP = 1 << 25,
268 IB_PORT_IP_BASED_GIDS = 1 << 26
278 static inline int ib_width_enum_to_int(enum ib_port_width width)
281 case IB_WIDTH_1X: return 1;
282 case IB_WIDTH_4X: return 4;
283 case IB_WIDTH_8X: return 8;
284 case IB_WIDTH_12X: return 12;
298 struct ib_protocol_stats {
302 struct iw_protocol_stats {
305 u64 ipInTooBigErrors;
308 u64 ipInUnknownProtos;
309 u64 ipInTruncatedPkts;
312 u64 ipOutForwDatagrams;
344 union rdma_protocol_stats {
345 struct ib_protocol_stats ib;
346 struct iw_protocol_stats iw;
349 struct ib_port_attr {
350 enum ib_port_state state;
352 enum ib_mtu active_mtu;
371 enum ib_device_modify_flags {
372 IB_DEVICE_MODIFY_SYS_IMAGE_GUID = 1 << 0,
373 IB_DEVICE_MODIFY_NODE_DESC = 1 << 1
376 struct ib_device_modify {
381 enum ib_port_modify_flags {
382 IB_PORT_SHUTDOWN = 1,
383 IB_PORT_INIT_TYPE = (1<<2),
384 IB_PORT_RESET_QKEY_CNTR = (1<<3)
387 struct ib_port_modify {
388 u32 set_port_cap_mask;
389 u32 clr_port_cap_mask;
397 IB_EVENT_QP_ACCESS_ERR,
401 IB_EVENT_PATH_MIG_ERR,
402 IB_EVENT_DEVICE_FATAL,
403 IB_EVENT_PORT_ACTIVE,
406 IB_EVENT_PKEY_CHANGE,
409 IB_EVENT_SRQ_LIMIT_REACHED,
410 IB_EVENT_QP_LAST_WQE_REACHED,
411 IB_EVENT_CLIENT_REREGISTER,
415 __attribute_const__ const char *ib_event_msg(enum ib_event_type event);
418 struct ib_device *device;
425 enum ib_event_type event;
428 struct ib_event_handler {
429 struct ib_device *device;
430 void (*handler)(struct ib_event_handler *, struct ib_event *);
431 struct list_head list;
434 #define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler) \
436 (_ptr)->device = _device; \
437 (_ptr)->handler = _handler; \
438 INIT_LIST_HEAD(&(_ptr)->list); \
441 struct ib_global_route {
450 __be32 version_tclass_flow;
459 IB_MULTICAST_QPN = 0xffffff
462 #define IB_LID_PERMISSIVE cpu_to_be16(0xFFFF)
469 IB_RATE_PORT_CURRENT = 0,
470 IB_RATE_2_5_GBPS = 2,
478 IB_RATE_120_GBPS = 10,
479 IB_RATE_14_GBPS = 11,
480 IB_RATE_56_GBPS = 12,
481 IB_RATE_112_GBPS = 13,
482 IB_RATE_168_GBPS = 14,
483 IB_RATE_25_GBPS = 15,
484 IB_RATE_100_GBPS = 16,
485 IB_RATE_200_GBPS = 17,
486 IB_RATE_300_GBPS = 18
490 * ib_rate_to_mult - Convert the IB rate enum to a multiple of the
491 * base rate of 2.5 Gbit/sec. For example, IB_RATE_5_GBPS will be
492 * converted to 2, since 5 Gbit/sec is 2 * 2.5 Gbit/sec.
493 * @rate: rate to convert.
495 __attribute_const__ int ib_rate_to_mult(enum ib_rate rate);
498 * ib_rate_to_mbps - Convert the IB rate enum to Mbps.
499 * For example, IB_RATE_2_5_GBPS will be converted to 2500.
500 * @rate: rate to convert.
502 __attribute_const__ int ib_rate_to_mbps(enum ib_rate rate);
504 enum ib_mr_create_flags {
505 IB_MR_SIGNATURE_EN = 1,
509 * ib_mr_init_attr - Memory region init attributes passed to routine
511 * @max_reg_descriptors: max number of registration descriptors that
512 * may be used with registration work requests.
513 * @flags: MR creation flags bit mask.
515 struct ib_mr_init_attr {
516 int max_reg_descriptors;
522 * IB_SIG_TYPE_NONE: Unprotected.
523 * IB_SIG_TYPE_T10_DIF: Type T10-DIF
525 enum ib_signature_type {
531 * Signature T10-DIF block-guard types
532 * IB_T10DIF_CRC: Corresponds to T10-PI mandated CRC checksum rules.
533 * IB_T10DIF_CSUM: Corresponds to IP checksum rules.
535 enum ib_t10_dif_bg_type {
541 * struct ib_t10_dif_domain - Parameters specific for T10-DIF
543 * @bg_type: T10-DIF block guard type (CRC|CSUM)
544 * @pi_interval: protection information interval.
545 * @bg: seed of guard computation.
546 * @app_tag: application tag of guard block
547 * @ref_tag: initial guard block reference tag.
548 * @ref_remap: Indicate wethear the reftag increments each block
549 * @app_escape: Indicate to skip block check if apptag=0xffff
550 * @ref_escape: Indicate to skip block check if reftag=0xffffffff
551 * @apptag_check_mask: check bitmask of application tag.
553 struct ib_t10_dif_domain {
554 enum ib_t10_dif_bg_type bg_type;
562 u16 apptag_check_mask;
566 * struct ib_sig_domain - Parameters for signature domain
567 * @sig_type: specific signauture type
568 * @sig: union of all signature domain attributes that may
569 * be used to set domain layout.
571 struct ib_sig_domain {
572 enum ib_signature_type sig_type;
574 struct ib_t10_dif_domain dif;
579 * struct ib_sig_attrs - Parameters for signature handover operation
580 * @check_mask: bitmask for signature byte check (8 bytes)
581 * @mem: memory domain layout desciptor.
582 * @wire: wire domain layout desciptor.
584 struct ib_sig_attrs {
586 struct ib_sig_domain mem;
587 struct ib_sig_domain wire;
590 enum ib_sig_err_type {
597 * struct ib_sig_err - signature error descriptor
600 enum ib_sig_err_type err_type;
607 enum ib_mr_status_check {
608 IB_MR_CHECK_SIG_STATUS = 1,
612 * struct ib_mr_status - Memory region status container
614 * @fail_status: Bitmask of MR checks status. For each
615 * failed check a corresponding status bit is set.
616 * @sig_err: Additional info for IB_MR_CEHCK_SIG_STATUS
619 struct ib_mr_status {
621 struct ib_sig_err sig_err;
625 * mult_to_ib_rate - Convert a multiple of 2.5 Gbit/sec to an IB rate
627 * @mult: multiple to convert.
629 __attribute_const__ enum ib_rate mult_to_ib_rate(int mult);
632 struct ib_global_route grh;
647 IB_WC_LOC_EEC_OP_ERR,
652 IB_WC_LOC_ACCESS_ERR,
653 IB_WC_REM_INV_REQ_ERR,
654 IB_WC_REM_ACCESS_ERR,
657 IB_WC_RNR_RETRY_EXC_ERR,
658 IB_WC_LOC_RDD_VIOL_ERR,
659 IB_WC_REM_INV_RD_REQ_ERR,
662 IB_WC_INV_EEC_STATE_ERR,
664 IB_WC_RESP_TIMEOUT_ERR,
668 __attribute_const__ const char *ib_wc_status_msg(enum ib_wc_status status);
680 IB_WC_MASKED_COMP_SWAP,
681 IB_WC_MASKED_FETCH_ADD,
683 * Set value of IB_WC_RECV so consumers can test if a completion is a
684 * receive by testing (opcode & IB_WC_RECV).
687 IB_WC_RECV_RDMA_WITH_IMM
692 IB_WC_WITH_IMM = (1<<1),
693 IB_WC_WITH_INVALIDATE = (1<<2),
694 IB_WC_IP_CSUM_OK = (1<<3),
695 IB_WC_WITH_SMAC = (1<<4),
696 IB_WC_WITH_VLAN = (1<<5),
701 enum ib_wc_status status;
702 enum ib_wc_opcode opcode;
716 u8 port_num; /* valid only for DR SMPs on switches */
721 enum ib_cq_notify_flags {
722 IB_CQ_SOLICITED = 1 << 0,
723 IB_CQ_NEXT_COMP = 1 << 1,
724 IB_CQ_SOLICITED_MASK = IB_CQ_SOLICITED | IB_CQ_NEXT_COMP,
725 IB_CQ_REPORT_MISSED_EVENTS = 1 << 2,
733 enum ib_srq_attr_mask {
734 IB_SRQ_MAX_WR = 1 << 0,
735 IB_SRQ_LIMIT = 1 << 1,
744 struct ib_srq_init_attr {
745 void (*event_handler)(struct ib_event *, void *);
747 struct ib_srq_attr attr;
748 enum ib_srq_type srq_type;
752 struct ib_xrcd *xrcd;
773 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
774 * here (and in that order) since the MAD layer uses them as
775 * indices into a 2-entry table.
784 IB_QPT_RAW_ETHERTYPE,
785 IB_QPT_RAW_PACKET = 8,
789 /* Reserve a range for qp types internal to the low level driver.
790 * These qp types will not be visible at the IB core layer, so the
791 * IB_QPT_MAX usages should not be affected in the core layer
793 IB_QPT_RESERVED1 = 0x1000,
805 enum ib_qp_create_flags {
806 IB_QP_CREATE_IPOIB_UD_LSO = 1 << 0,
807 IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK = 1 << 1,
808 IB_QP_CREATE_NETIF_QP = 1 << 5,
809 IB_QP_CREATE_SIGNATURE_EN = 1 << 6,
810 IB_QP_CREATE_USE_GFP_NOIO = 1 << 7,
811 /* reserve bits 26-31 for low level drivers' internal use */
812 IB_QP_CREATE_RESERVED_START = 1 << 26,
813 IB_QP_CREATE_RESERVED_END = 1 << 31,
818 * Note: users may not call ib_close_qp or ib_destroy_qp from the event_handler
819 * callback to destroy the passed in QP.
822 struct ib_qp_init_attr {
823 void (*event_handler)(struct ib_event *, void *);
825 struct ib_cq *send_cq;
826 struct ib_cq *recv_cq;
828 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
829 struct ib_qp_cap cap;
830 enum ib_sig_type sq_sig_type;
831 enum ib_qp_type qp_type;
832 enum ib_qp_create_flags create_flags;
833 u8 port_num; /* special QP types only */
836 struct ib_qp_open_attr {
837 void (*event_handler)(struct ib_event *, void *);
840 enum ib_qp_type qp_type;
843 enum ib_rnr_timeout {
844 IB_RNR_TIMER_655_36 = 0,
845 IB_RNR_TIMER_000_01 = 1,
846 IB_RNR_TIMER_000_02 = 2,
847 IB_RNR_TIMER_000_03 = 3,
848 IB_RNR_TIMER_000_04 = 4,
849 IB_RNR_TIMER_000_06 = 5,
850 IB_RNR_TIMER_000_08 = 6,
851 IB_RNR_TIMER_000_12 = 7,
852 IB_RNR_TIMER_000_16 = 8,
853 IB_RNR_TIMER_000_24 = 9,
854 IB_RNR_TIMER_000_32 = 10,
855 IB_RNR_TIMER_000_48 = 11,
856 IB_RNR_TIMER_000_64 = 12,
857 IB_RNR_TIMER_000_96 = 13,
858 IB_RNR_TIMER_001_28 = 14,
859 IB_RNR_TIMER_001_92 = 15,
860 IB_RNR_TIMER_002_56 = 16,
861 IB_RNR_TIMER_003_84 = 17,
862 IB_RNR_TIMER_005_12 = 18,
863 IB_RNR_TIMER_007_68 = 19,
864 IB_RNR_TIMER_010_24 = 20,
865 IB_RNR_TIMER_015_36 = 21,
866 IB_RNR_TIMER_020_48 = 22,
867 IB_RNR_TIMER_030_72 = 23,
868 IB_RNR_TIMER_040_96 = 24,
869 IB_RNR_TIMER_061_44 = 25,
870 IB_RNR_TIMER_081_92 = 26,
871 IB_RNR_TIMER_122_88 = 27,
872 IB_RNR_TIMER_163_84 = 28,
873 IB_RNR_TIMER_245_76 = 29,
874 IB_RNR_TIMER_327_68 = 30,
875 IB_RNR_TIMER_491_52 = 31
878 enum ib_qp_attr_mask {
880 IB_QP_CUR_STATE = (1<<1),
881 IB_QP_EN_SQD_ASYNC_NOTIFY = (1<<2),
882 IB_QP_ACCESS_FLAGS = (1<<3),
883 IB_QP_PKEY_INDEX = (1<<4),
887 IB_QP_PATH_MTU = (1<<8),
888 IB_QP_TIMEOUT = (1<<9),
889 IB_QP_RETRY_CNT = (1<<10),
890 IB_QP_RNR_RETRY = (1<<11),
891 IB_QP_RQ_PSN = (1<<12),
892 IB_QP_MAX_QP_RD_ATOMIC = (1<<13),
893 IB_QP_ALT_PATH = (1<<14),
894 IB_QP_MIN_RNR_TIMER = (1<<15),
895 IB_QP_SQ_PSN = (1<<16),
896 IB_QP_MAX_DEST_RD_ATOMIC = (1<<17),
897 IB_QP_PATH_MIG_STATE = (1<<18),
899 IB_QP_DEST_QPN = (1<<20),
900 IB_QP_SMAC = (1<<21),
901 IB_QP_ALT_SMAC = (1<<22),
903 IB_QP_ALT_VID = (1<<24),
928 enum ib_qp_state qp_state;
929 enum ib_qp_state cur_qp_state;
930 enum ib_mtu path_mtu;
931 enum ib_mig_state path_mig_state;
937 struct ib_qp_cap cap;
938 struct ib_ah_attr ah_attr;
939 struct ib_ah_attr alt_ah_attr;
942 u8 en_sqd_async_notify;
945 u8 max_dest_rd_atomic;
954 u8 alt_smac[ETH_ALEN];
961 IB_WR_RDMA_WRITE_WITH_IMM,
965 IB_WR_ATOMIC_CMP_AND_SWP,
966 IB_WR_ATOMIC_FETCH_AND_ADD,
969 IB_WR_RDMA_READ_WITH_INV,
972 IB_WR_MASKED_ATOMIC_CMP_AND_SWP,
973 IB_WR_MASKED_ATOMIC_FETCH_AND_ADD,
976 /* reserve values for low level drivers' internal use.
977 * These values will not be used at all in the ib core layer.
979 IB_WR_RESERVED1 = 0xf0,
993 IB_SEND_SIGNALED = (1<<1),
994 IB_SEND_SOLICITED = (1<<2),
995 IB_SEND_INLINE = (1<<3),
996 IB_SEND_IP_CSUM = (1<<4),
998 /* reserve bits 26-31 for low level drivers' internal use */
999 IB_SEND_RESERVED_START = (1 << 26),
1000 IB_SEND_RESERVED_END = (1 << 31),
1009 struct ib_fast_reg_page_list {
1010 struct ib_device *device;
1012 unsigned int max_page_list_len;
1016 * struct ib_mw_bind_info - Parameters for a memory window bind operation.
1017 * @mr: A memory region to bind the memory window to.
1018 * @addr: The address where the memory window should begin.
1019 * @length: The length of the memory window, in bytes.
1020 * @mw_access_flags: Access flags from enum ib_access_flags for the window.
1022 * This struct contains the shared parameters for type 1 and type 2
1023 * memory window bind operations.
1025 struct ib_mw_bind_info {
1029 int mw_access_flags;
1033 struct ib_send_wr *next;
1035 struct ib_sge *sg_list;
1037 enum ib_wr_opcode opcode;
1041 u32 invalidate_rkey;
1052 u64 compare_add_mask;
1063 u16 pkey_index; /* valid for GSI only */
1064 u8 port_num; /* valid for DR SMPs on switch only */
1068 struct ib_fast_reg_page_list *page_list;
1069 unsigned int page_shift;
1070 unsigned int page_list_len;
1077 /* The new rkey for the memory window. */
1079 struct ib_mw_bind_info bind_info;
1082 struct ib_sig_attrs *sig_attrs;
1083 struct ib_mr *sig_mr;
1085 struct ib_sge *prot;
1088 u32 xrc_remote_srq_num; /* XRC TGT QPs only */
1092 struct ib_recv_wr *next;
1094 struct ib_sge *sg_list;
1098 enum ib_access_flags {
1099 IB_ACCESS_LOCAL_WRITE = 1,
1100 IB_ACCESS_REMOTE_WRITE = (1<<1),
1101 IB_ACCESS_REMOTE_READ = (1<<2),
1102 IB_ACCESS_REMOTE_ATOMIC = (1<<3),
1103 IB_ACCESS_MW_BIND = (1<<4),
1104 IB_ZERO_BASED = (1<<5),
1105 IB_ACCESS_ON_DEMAND = (1<<6),
1108 struct ib_phys_buf {
1115 u64 device_virt_addr;
1117 int mr_access_flags;
1122 enum ib_mr_rereg_flags {
1123 IB_MR_REREG_TRANS = 1,
1124 IB_MR_REREG_PD = (1<<1),
1125 IB_MR_REREG_ACCESS = (1<<2),
1126 IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
1130 * struct ib_mw_bind - Parameters for a type 1 memory window bind operation.
1131 * @wr_id: Work request id.
1132 * @send_flags: Flags from ib_send_flags enum.
1133 * @bind_info: More parameters of the bind operation.
1138 struct ib_mw_bind_info bind_info;
1141 struct ib_fmr_attr {
1149 struct ib_ucontext {
1150 struct ib_device *device;
1151 struct list_head pd_list;
1152 struct list_head mr_list;
1153 struct list_head mw_list;
1154 struct list_head cq_list;
1155 struct list_head qp_list;
1156 struct list_head srq_list;
1157 struct list_head ah_list;
1158 struct list_head xrcd_list;
1159 struct list_head rule_list;
1163 #ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
1164 struct rb_root umem_tree;
1166 * Protects .umem_rbroot and tree, as well as odp_mrs_count and
1167 * mmu notifiers registration.
1169 struct rw_semaphore umem_rwsem;
1170 void (*invalidate_range)(struct ib_umem *umem,
1171 unsigned long start, unsigned long end);
1173 struct mmu_notifier mn;
1174 atomic_t notifier_count;
1175 /* A list of umems that don't have private mmu notifier counters yet. */
1176 struct list_head no_private_counters;
1182 u64 user_handle; /* handle given to us by userspace */
1183 struct ib_ucontext *context; /* associated user context */
1184 void *object; /* containing object */
1185 struct list_head list; /* link to context's list */
1186 int id; /* index into kernel idr */
1188 struct rw_semaphore mutex; /* protects .live */
1193 const void __user *inbuf;
1194 void __user *outbuf;
1200 struct ib_device *device;
1201 struct ib_uobject *uobject;
1202 atomic_t usecnt; /* count all resources */
1206 struct ib_device *device;
1207 atomic_t usecnt; /* count all exposed resources */
1208 struct inode *inode;
1210 struct mutex tgt_qp_mutex;
1211 struct list_head tgt_qp_list;
1215 struct ib_device *device;
1217 struct ib_uobject *uobject;
1220 typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
1223 struct ib_device *device;
1224 struct ib_uobject *uobject;
1225 ib_comp_handler comp_handler;
1226 void (*event_handler)(struct ib_event *, void *);
1229 atomic_t usecnt; /* count number of work queues */
1233 struct ib_device *device;
1235 struct ib_uobject *uobject;
1236 void (*event_handler)(struct ib_event *, void *);
1238 enum ib_srq_type srq_type;
1243 struct ib_xrcd *xrcd;
1251 struct ib_device *device;
1253 struct ib_cq *send_cq;
1254 struct ib_cq *recv_cq;
1256 struct ib_xrcd *xrcd; /* XRC TGT QPs only */
1257 struct list_head xrcd_list;
1258 /* count times opened, mcast attaches, flow attaches */
1260 struct list_head open_list;
1261 struct ib_qp *real_qp;
1262 struct ib_uobject *uobject;
1263 void (*event_handler)(struct ib_event *, void *);
1266 enum ib_qp_type qp_type;
1270 struct ib_device *device;
1272 struct ib_uobject *uobject;
1275 atomic_t usecnt; /* count number of MWs */
1279 struct ib_device *device;
1281 struct ib_uobject *uobject;
1283 enum ib_mw_type type;
1287 struct ib_device *device;
1289 struct list_head list;
1294 /* Supported steering options */
1295 enum ib_flow_attr_type {
1296 /* steering according to rule specifications */
1297 IB_FLOW_ATTR_NORMAL = 0x0,
1298 /* default unicast and multicast rule -
1299 * receive all Eth traffic which isn't steered to any QP
1301 IB_FLOW_ATTR_ALL_DEFAULT = 0x1,
1302 /* default multicast rule -
1303 * receive all Eth multicast traffic which isn't steered to any QP
1305 IB_FLOW_ATTR_MC_DEFAULT = 0x2,
1306 /* sniffer rule - receive all port traffic */
1307 IB_FLOW_ATTR_SNIFFER = 0x3
1310 /* Supported steering header types */
1311 enum ib_flow_spec_type {
1313 IB_FLOW_SPEC_ETH = 0x20,
1314 IB_FLOW_SPEC_IB = 0x22,
1316 IB_FLOW_SPEC_IPV4 = 0x30,
1318 IB_FLOW_SPEC_TCP = 0x40,
1319 IB_FLOW_SPEC_UDP = 0x41
1321 #define IB_FLOW_SPEC_LAYER_MASK 0xF0
1322 #define IB_FLOW_SPEC_SUPPORT_LAYERS 4
1324 /* Flow steering rule priority is set according to it's domain.
1325 * Lower domain value means higher priority.
1327 enum ib_flow_domain {
1328 IB_FLOW_DOMAIN_USER,
1329 IB_FLOW_DOMAIN_ETHTOOL,
1332 IB_FLOW_DOMAIN_NUM /* Must be last */
1335 struct ib_flow_eth_filter {
1342 struct ib_flow_spec_eth {
1343 enum ib_flow_spec_type type;
1345 struct ib_flow_eth_filter val;
1346 struct ib_flow_eth_filter mask;
1349 struct ib_flow_ib_filter {
1354 struct ib_flow_spec_ib {
1355 enum ib_flow_spec_type type;
1357 struct ib_flow_ib_filter val;
1358 struct ib_flow_ib_filter mask;
1361 struct ib_flow_ipv4_filter {
1366 struct ib_flow_spec_ipv4 {
1367 enum ib_flow_spec_type type;
1369 struct ib_flow_ipv4_filter val;
1370 struct ib_flow_ipv4_filter mask;
1373 struct ib_flow_tcp_udp_filter {
1378 struct ib_flow_spec_tcp_udp {
1379 enum ib_flow_spec_type type;
1381 struct ib_flow_tcp_udp_filter val;
1382 struct ib_flow_tcp_udp_filter mask;
1385 union ib_flow_spec {
1387 enum ib_flow_spec_type type;
1390 struct ib_flow_spec_eth eth;
1391 struct ib_flow_spec_ib ib;
1392 struct ib_flow_spec_ipv4 ipv4;
1393 struct ib_flow_spec_tcp_udp tcp_udp;
1396 struct ib_flow_attr {
1397 enum ib_flow_attr_type type;
1403 /* Following are the optional layers according to user request
1404 * struct ib_flow_spec_xxx
1405 * struct ib_flow_spec_yyy
1411 struct ib_uobject *uobject;
1417 enum ib_process_mad_flags {
1418 IB_MAD_IGNORE_MKEY = 1,
1419 IB_MAD_IGNORE_BKEY = 2,
1420 IB_MAD_IGNORE_ALL = IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
1423 enum ib_mad_result {
1424 IB_MAD_RESULT_FAILURE = 0, /* (!SUCCESS is the important flag) */
1425 IB_MAD_RESULT_SUCCESS = 1 << 0, /* MAD was successfully processed */
1426 IB_MAD_RESULT_REPLY = 1 << 1, /* Reply packet needs to be sent */
1427 IB_MAD_RESULT_CONSUMED = 1 << 2 /* Packet consumed: stop processing */
1430 #define IB_DEVICE_NAME_MAX 64
1434 struct ib_event_handler event_handler;
1435 struct ib_pkey_cache **pkey_cache;
1436 struct ib_gid_cache **gid_cache;
1440 struct ib_dma_mapping_ops {
1441 int (*mapping_error)(struct ib_device *dev,
1443 u64 (*map_single)(struct ib_device *dev,
1444 void *ptr, size_t size,
1445 enum dma_data_direction direction);
1446 void (*unmap_single)(struct ib_device *dev,
1447 u64 addr, size_t size,
1448 enum dma_data_direction direction);
1449 u64 (*map_page)(struct ib_device *dev,
1450 struct page *page, unsigned long offset,
1452 enum dma_data_direction direction);
1453 void (*unmap_page)(struct ib_device *dev,
1454 u64 addr, size_t size,
1455 enum dma_data_direction direction);
1456 int (*map_sg)(struct ib_device *dev,
1457 struct scatterlist *sg, int nents,
1458 enum dma_data_direction direction);
1459 void (*unmap_sg)(struct ib_device *dev,
1460 struct scatterlist *sg, int nents,
1461 enum dma_data_direction direction);
1462 void (*sync_single_for_cpu)(struct ib_device *dev,
1465 enum dma_data_direction dir);
1466 void (*sync_single_for_device)(struct ib_device *dev,
1469 enum dma_data_direction dir);
1470 void *(*alloc_coherent)(struct ib_device *dev,
1474 void (*free_coherent)(struct ib_device *dev,
1475 size_t size, void *cpu_addr,
1482 struct device *dma_device;
1484 char name[IB_DEVICE_NAME_MAX];
1486 struct list_head event_handler_list;
1487 spinlock_t event_handler_lock;
1489 spinlock_t client_data_lock;
1490 struct list_head core_list;
1491 struct list_head client_data_list;
1493 struct ib_cache cache;
1497 int num_comp_vectors;
1499 struct iw_cm_verbs *iwcm;
1501 int (*get_protocol_stats)(struct ib_device *device,
1502 union rdma_protocol_stats *stats);
1503 int (*query_device)(struct ib_device *device,
1504 struct ib_device_attr *device_attr);
1505 int (*query_port)(struct ib_device *device,
1507 struct ib_port_attr *port_attr);
1508 enum rdma_link_layer (*get_link_layer)(struct ib_device *device,
1510 int (*query_gid)(struct ib_device *device,
1511 u8 port_num, int index,
1513 int (*query_pkey)(struct ib_device *device,
1514 u8 port_num, u16 index, u16 *pkey);
1515 int (*modify_device)(struct ib_device *device,
1516 int device_modify_mask,
1517 struct ib_device_modify *device_modify);
1518 int (*modify_port)(struct ib_device *device,
1519 u8 port_num, int port_modify_mask,
1520 struct ib_port_modify *port_modify);
1521 struct ib_ucontext * (*alloc_ucontext)(struct ib_device *device,
1522 struct ib_udata *udata);
1523 int (*dealloc_ucontext)(struct ib_ucontext *context);
1524 int (*mmap)(struct ib_ucontext *context,
1525 struct vm_area_struct *vma);
1526 struct ib_pd * (*alloc_pd)(struct ib_device *device,
1527 struct ib_ucontext *context,
1528 struct ib_udata *udata);
1529 int (*dealloc_pd)(struct ib_pd *pd);
1530 struct ib_ah * (*create_ah)(struct ib_pd *pd,
1531 struct ib_ah_attr *ah_attr);
1532 int (*modify_ah)(struct ib_ah *ah,
1533 struct ib_ah_attr *ah_attr);
1534 int (*query_ah)(struct ib_ah *ah,
1535 struct ib_ah_attr *ah_attr);
1536 int (*destroy_ah)(struct ib_ah *ah);
1537 struct ib_srq * (*create_srq)(struct ib_pd *pd,
1538 struct ib_srq_init_attr *srq_init_attr,
1539 struct ib_udata *udata);
1540 int (*modify_srq)(struct ib_srq *srq,
1541 struct ib_srq_attr *srq_attr,
1542 enum ib_srq_attr_mask srq_attr_mask,
1543 struct ib_udata *udata);
1544 int (*query_srq)(struct ib_srq *srq,
1545 struct ib_srq_attr *srq_attr);
1546 int (*destroy_srq)(struct ib_srq *srq);
1547 int (*post_srq_recv)(struct ib_srq *srq,
1548 struct ib_recv_wr *recv_wr,
1549 struct ib_recv_wr **bad_recv_wr);
1550 struct ib_qp * (*create_qp)(struct ib_pd *pd,
1551 struct ib_qp_init_attr *qp_init_attr,
1552 struct ib_udata *udata);
1553 int (*modify_qp)(struct ib_qp *qp,
1554 struct ib_qp_attr *qp_attr,
1556 struct ib_udata *udata);
1557 int (*query_qp)(struct ib_qp *qp,
1558 struct ib_qp_attr *qp_attr,
1560 struct ib_qp_init_attr *qp_init_attr);
1561 int (*destroy_qp)(struct ib_qp *qp);
1562 int (*post_send)(struct ib_qp *qp,
1563 struct ib_send_wr *send_wr,
1564 struct ib_send_wr **bad_send_wr);
1565 int (*post_recv)(struct ib_qp *qp,
1566 struct ib_recv_wr *recv_wr,
1567 struct ib_recv_wr **bad_recv_wr);
1568 struct ib_cq * (*create_cq)(struct ib_device *device, int cqe,
1570 struct ib_ucontext *context,
1571 struct ib_udata *udata);
1572 int (*modify_cq)(struct ib_cq *cq, u16 cq_count,
1574 int (*destroy_cq)(struct ib_cq *cq);
1575 int (*resize_cq)(struct ib_cq *cq, int cqe,
1576 struct ib_udata *udata);
1577 int (*poll_cq)(struct ib_cq *cq, int num_entries,
1579 int (*peek_cq)(struct ib_cq *cq, int wc_cnt);
1580 int (*req_notify_cq)(struct ib_cq *cq,
1581 enum ib_cq_notify_flags flags);
1582 int (*req_ncomp_notif)(struct ib_cq *cq,
1584 struct ib_mr * (*get_dma_mr)(struct ib_pd *pd,
1585 int mr_access_flags);
1586 struct ib_mr * (*reg_phys_mr)(struct ib_pd *pd,
1587 struct ib_phys_buf *phys_buf_array,
1589 int mr_access_flags,
1591 struct ib_mr * (*reg_user_mr)(struct ib_pd *pd,
1592 u64 start, u64 length,
1594 int mr_access_flags,
1595 struct ib_udata *udata);
1596 int (*rereg_user_mr)(struct ib_mr *mr,
1598 u64 start, u64 length,
1600 int mr_access_flags,
1602 struct ib_udata *udata);
1603 int (*query_mr)(struct ib_mr *mr,
1604 struct ib_mr_attr *mr_attr);
1605 int (*dereg_mr)(struct ib_mr *mr);
1606 int (*destroy_mr)(struct ib_mr *mr);
1607 struct ib_mr * (*create_mr)(struct ib_pd *pd,
1608 struct ib_mr_init_attr *mr_init_attr);
1609 struct ib_mr * (*alloc_fast_reg_mr)(struct ib_pd *pd,
1610 int max_page_list_len);
1611 struct ib_fast_reg_page_list * (*alloc_fast_reg_page_list)(struct ib_device *device,
1613 void (*free_fast_reg_page_list)(struct ib_fast_reg_page_list *page_list);
1614 int (*rereg_phys_mr)(struct ib_mr *mr,
1617 struct ib_phys_buf *phys_buf_array,
1619 int mr_access_flags,
1621 struct ib_mw * (*alloc_mw)(struct ib_pd *pd,
1622 enum ib_mw_type type);
1623 int (*bind_mw)(struct ib_qp *qp,
1625 struct ib_mw_bind *mw_bind);
1626 int (*dealloc_mw)(struct ib_mw *mw);
1627 struct ib_fmr * (*alloc_fmr)(struct ib_pd *pd,
1628 int mr_access_flags,
1629 struct ib_fmr_attr *fmr_attr);
1630 int (*map_phys_fmr)(struct ib_fmr *fmr,
1631 u64 *page_list, int list_len,
1633 int (*unmap_fmr)(struct list_head *fmr_list);
1634 int (*dealloc_fmr)(struct ib_fmr *fmr);
1635 int (*attach_mcast)(struct ib_qp *qp,
1638 int (*detach_mcast)(struct ib_qp *qp,
1641 int (*process_mad)(struct ib_device *device,
1642 int process_mad_flags,
1644 struct ib_wc *in_wc,
1645 struct ib_grh *in_grh,
1646 struct ib_mad *in_mad,
1647 struct ib_mad *out_mad);
1648 struct ib_xrcd * (*alloc_xrcd)(struct ib_device *device,
1649 struct ib_ucontext *ucontext,
1650 struct ib_udata *udata);
1651 int (*dealloc_xrcd)(struct ib_xrcd *xrcd);
1652 struct ib_flow * (*create_flow)(struct ib_qp *qp,
1656 int (*destroy_flow)(struct ib_flow *flow_id);
1657 int (*check_mr_status)(struct ib_mr *mr, u32 check_mask,
1658 struct ib_mr_status *mr_status);
1660 struct ib_dma_mapping_ops *dma_ops;
1662 struct module *owner;
1664 struct kobject *ports_parent;
1665 struct list_head port_list;
1668 IB_DEV_UNINITIALIZED,
1674 u64 uverbs_cmd_mask;
1675 u64 uverbs_ex_cmd_mask;
1686 void (*add) (struct ib_device *);
1687 void (*remove)(struct ib_device *);
1689 struct list_head list;
1692 struct ib_device *ib_alloc_device(size_t size);
1693 void ib_dealloc_device(struct ib_device *device);
1695 int ib_register_device(struct ib_device *device,
1696 int (*port_callback)(struct ib_device *,
1697 u8, struct kobject *));
1698 void ib_unregister_device(struct ib_device *device);
1700 int ib_register_client (struct ib_client *client);
1701 void ib_unregister_client(struct ib_client *client);
1703 void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
1704 void ib_set_client_data(struct ib_device *device, struct ib_client *client,
1707 static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
1709 return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
1712 static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
1714 return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
1718 * ib_modify_qp_is_ok - Check that the supplied attribute mask
1719 * contains all required attributes and no attributes not allowed for
1720 * the given QP state transition.
1721 * @cur_state: Current QP state
1722 * @next_state: Next QP state
1724 * @mask: Mask of supplied QP attributes
1725 * @ll : link layer of port
1727 * This function is a helper function that a low-level driver's
1728 * modify_qp method can use to validate the consumer's input. It
1729 * checks that cur_state and next_state are valid QP states, that a
1730 * transition from cur_state to next_state is allowed by the IB spec,
1731 * and that the attribute mask supplied is allowed for the transition.
1733 int ib_modify_qp_is_ok(enum ib_qp_state cur_state, enum ib_qp_state next_state,
1734 enum ib_qp_type type, enum ib_qp_attr_mask mask,
1735 enum rdma_link_layer ll);
1737 int ib_register_event_handler (struct ib_event_handler *event_handler);
1738 int ib_unregister_event_handler(struct ib_event_handler *event_handler);
1739 void ib_dispatch_event(struct ib_event *event);
1741 int ib_query_device(struct ib_device *device,
1742 struct ib_device_attr *device_attr);
1744 int ib_query_port(struct ib_device *device,
1745 u8 port_num, struct ib_port_attr *port_attr);
1747 enum rdma_link_layer rdma_port_get_link_layer(struct ib_device *device,
1750 int ib_query_gid(struct ib_device *device,
1751 u8 port_num, int index, union ib_gid *gid);
1753 int ib_query_pkey(struct ib_device *device,
1754 u8 port_num, u16 index, u16 *pkey);
1756 int ib_modify_device(struct ib_device *device,
1757 int device_modify_mask,
1758 struct ib_device_modify *device_modify);
1760 int ib_modify_port(struct ib_device *device,
1761 u8 port_num, int port_modify_mask,
1762 struct ib_port_modify *port_modify);
1764 int ib_find_gid(struct ib_device *device, union ib_gid *gid,
1765 u8 *port_num, u16 *index);
1767 int ib_find_pkey(struct ib_device *device,
1768 u8 port_num, u16 pkey, u16 *index);
1771 * ib_alloc_pd - Allocates an unused protection domain.
1772 * @device: The device on which to allocate the protection domain.
1774 * A protection domain object provides an association between QPs, shared
1775 * receive queues, address handles, memory regions, and memory windows.
1777 struct ib_pd *ib_alloc_pd(struct ib_device *device);
1780 * ib_dealloc_pd - Deallocates a protection domain.
1781 * @pd: The protection domain to deallocate.
1783 int ib_dealloc_pd(struct ib_pd *pd);
1786 * ib_create_ah - Creates an address handle for the given address vector.
1787 * @pd: The protection domain associated with the address handle.
1788 * @ah_attr: The attributes of the address vector.
1790 * The address handle is used to reference a local or global destination
1791 * in all UD QP post sends.
1793 struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
1796 * ib_init_ah_from_wc - Initializes address handle attributes from a
1798 * @device: Device on which the received message arrived.
1799 * @port_num: Port on which the received message arrived.
1800 * @wc: Work completion associated with the received message.
1801 * @grh: References the received global route header. This parameter is
1802 * ignored unless the work completion indicates that the GRH is valid.
1803 * @ah_attr: Returned attributes that can be used when creating an address
1804 * handle for replying to the message.
1806 int ib_init_ah_from_wc(struct ib_device *device, u8 port_num, struct ib_wc *wc,
1807 struct ib_grh *grh, struct ib_ah_attr *ah_attr);
1810 * ib_create_ah_from_wc - Creates an address handle associated with the
1811 * sender of the specified work completion.
1812 * @pd: The protection domain associated with the address handle.
1813 * @wc: Work completion information associated with a received message.
1814 * @grh: References the received global route header. This parameter is
1815 * ignored unless the work completion indicates that the GRH is valid.
1816 * @port_num: The outbound port number to associate with the address.
1818 * The address handle is used to reference a local or global destination
1819 * in all UD QP post sends.
1821 struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
1822 struct ib_grh *grh, u8 port_num);
1825 * ib_modify_ah - Modifies the address vector associated with an address
1827 * @ah: The address handle to modify.
1828 * @ah_attr: The new address vector attributes to associate with the
1831 int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1834 * ib_query_ah - Queries the address vector associated with an address
1836 * @ah: The address handle to query.
1837 * @ah_attr: The address vector attributes associated with the address
1840 int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
1843 * ib_destroy_ah - Destroys an address handle.
1844 * @ah: The address handle to destroy.
1846 int ib_destroy_ah(struct ib_ah *ah);
1849 * ib_create_srq - Creates a SRQ associated with the specified protection
1851 * @pd: The protection domain associated with the SRQ.
1852 * @srq_init_attr: A list of initial attributes required to create the
1853 * SRQ. If SRQ creation succeeds, then the attributes are updated to
1854 * the actual capabilities of the created SRQ.
1856 * srq_attr->max_wr and srq_attr->max_sge are read the determine the
1857 * requested size of the SRQ, and set to the actual values allocated
1858 * on return. If ib_create_srq() succeeds, then max_wr and max_sge
1859 * will always be at least as large as the requested values.
1861 struct ib_srq *ib_create_srq(struct ib_pd *pd,
1862 struct ib_srq_init_attr *srq_init_attr);
1865 * ib_modify_srq - Modifies the attributes for the specified SRQ.
1866 * @srq: The SRQ to modify.
1867 * @srq_attr: On input, specifies the SRQ attributes to modify. On output,
1868 * the current values of selected SRQ attributes are returned.
1869 * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
1870 * are being modified.
1872 * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
1873 * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
1874 * the number of receives queued drops below the limit.
1876 int ib_modify_srq(struct ib_srq *srq,
1877 struct ib_srq_attr *srq_attr,
1878 enum ib_srq_attr_mask srq_attr_mask);
1881 * ib_query_srq - Returns the attribute list and current values for the
1883 * @srq: The SRQ to query.
1884 * @srq_attr: The attributes of the specified SRQ.
1886 int ib_query_srq(struct ib_srq *srq,
1887 struct ib_srq_attr *srq_attr);
1890 * ib_destroy_srq - Destroys the specified SRQ.
1891 * @srq: The SRQ to destroy.
1893 int ib_destroy_srq(struct ib_srq *srq);
1896 * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
1897 * @srq: The SRQ to post the work request on.
1898 * @recv_wr: A list of work requests to post on the receive queue.
1899 * @bad_recv_wr: On an immediate failure, this parameter will reference
1900 * the work request that failed to be posted on the QP.
1902 static inline int ib_post_srq_recv(struct ib_srq *srq,
1903 struct ib_recv_wr *recv_wr,
1904 struct ib_recv_wr **bad_recv_wr)
1906 return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
1910 * ib_create_qp - Creates a QP associated with the specified protection
1912 * @pd: The protection domain associated with the QP.
1913 * @qp_init_attr: A list of initial attributes required to create the
1914 * QP. If QP creation succeeds, then the attributes are updated to
1915 * the actual capabilities of the created QP.
1917 struct ib_qp *ib_create_qp(struct ib_pd *pd,
1918 struct ib_qp_init_attr *qp_init_attr);
1921 * ib_modify_qp - Modifies the attributes for the specified QP and then
1922 * transitions the QP to the given state.
1923 * @qp: The QP to modify.
1924 * @qp_attr: On input, specifies the QP attributes to modify. On output,
1925 * the current values of selected QP attributes are returned.
1926 * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
1927 * are being modified.
1929 int ib_modify_qp(struct ib_qp *qp,
1930 struct ib_qp_attr *qp_attr,
1934 * ib_query_qp - Returns the attribute list and current values for the
1936 * @qp: The QP to query.
1937 * @qp_attr: The attributes of the specified QP.
1938 * @qp_attr_mask: A bit-mask used to select specific attributes to query.
1939 * @qp_init_attr: Additional attributes of the selected QP.
1941 * The qp_attr_mask may be used to limit the query to gathering only the
1942 * selected attributes.
1944 int ib_query_qp(struct ib_qp *qp,
1945 struct ib_qp_attr *qp_attr,
1947 struct ib_qp_init_attr *qp_init_attr);
1950 * ib_destroy_qp - Destroys the specified QP.
1951 * @qp: The QP to destroy.
1953 int ib_destroy_qp(struct ib_qp *qp);
1956 * ib_open_qp - Obtain a reference to an existing sharable QP.
1957 * @xrcd - XRC domain
1958 * @qp_open_attr: Attributes identifying the QP to open.
1960 * Returns a reference to a sharable QP.
1962 struct ib_qp *ib_open_qp(struct ib_xrcd *xrcd,
1963 struct ib_qp_open_attr *qp_open_attr);
1966 * ib_close_qp - Release an external reference to a QP.
1967 * @qp: The QP handle to release
1969 * The opened QP handle is released by the caller. The underlying
1970 * shared QP is not destroyed until all internal references are released.
1972 int ib_close_qp(struct ib_qp *qp);
1975 * ib_post_send - Posts a list of work requests to the send queue of
1977 * @qp: The QP to post the work request on.
1978 * @send_wr: A list of work requests to post on the send queue.
1979 * @bad_send_wr: On an immediate failure, this parameter will reference
1980 * the work request that failed to be posted on the QP.
1982 * While IBA Vol. 1 section 11.4.1.1 specifies that if an immediate
1983 * error is returned, the QP state shall not be affected,
1984 * ib_post_send() will return an immediate error after queueing any
1985 * earlier work requests in the list.
1987 static inline int ib_post_send(struct ib_qp *qp,
1988 struct ib_send_wr *send_wr,
1989 struct ib_send_wr **bad_send_wr)
1991 return qp->device->post_send(qp, send_wr, bad_send_wr);
1995 * ib_post_recv - Posts a list of work requests to the receive queue of
1997 * @qp: The QP to post the work request on.
1998 * @recv_wr: A list of work requests to post on the receive queue.
1999 * @bad_recv_wr: On an immediate failure, this parameter will reference
2000 * the work request that failed to be posted on the QP.
2002 static inline int ib_post_recv(struct ib_qp *qp,
2003 struct ib_recv_wr *recv_wr,
2004 struct ib_recv_wr **bad_recv_wr)
2006 return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
2010 * ib_create_cq - Creates a CQ on the specified device.
2011 * @device: The device on which to create the CQ.
2012 * @comp_handler: A user-specified callback that is invoked when a
2013 * completion event occurs on the CQ.
2014 * @event_handler: A user-specified callback that is invoked when an
2015 * asynchronous event not associated with a completion occurs on the CQ.
2016 * @cq_context: Context associated with the CQ returned to the user via
2017 * the associated completion and event handlers.
2018 * @cqe: The minimum size of the CQ.
2019 * @comp_vector - Completion vector used to signal completion events.
2020 * Must be >= 0 and < context->num_comp_vectors.
2022 * Users can examine the cq structure to determine the actual CQ size.
2024 struct ib_cq *ib_create_cq(struct ib_device *device,
2025 ib_comp_handler comp_handler,
2026 void (*event_handler)(struct ib_event *, void *),
2027 void *cq_context, int cqe, int comp_vector);
2030 * ib_resize_cq - Modifies the capacity of the CQ.
2031 * @cq: The CQ to resize.
2032 * @cqe: The minimum size of the CQ.
2034 * Users can examine the cq structure to determine the actual CQ size.
2036 int ib_resize_cq(struct ib_cq *cq, int cqe);
2039 * ib_modify_cq - Modifies moderation params of the CQ
2040 * @cq: The CQ to modify.
2041 * @cq_count: number of CQEs that will trigger an event
2042 * @cq_period: max period of time in usec before triggering an event
2045 int ib_modify_cq(struct ib_cq *cq, u16 cq_count, u16 cq_period);
2048 * ib_destroy_cq - Destroys the specified CQ.
2049 * @cq: The CQ to destroy.
2051 int ib_destroy_cq(struct ib_cq *cq);
2054 * ib_poll_cq - poll a CQ for completion(s)
2055 * @cq:the CQ being polled
2056 * @num_entries:maximum number of completions to return
2057 * @wc:array of at least @num_entries &struct ib_wc where completions
2060 * Poll a CQ for (possibly multiple) completions. If the return value
2061 * is < 0, an error occurred. If the return value is >= 0, it is the
2062 * number of completions returned. If the return value is
2063 * non-negative and < num_entries, then the CQ was emptied.
2065 static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
2068 return cq->device->poll_cq(cq, num_entries, wc);
2072 * ib_peek_cq - Returns the number of unreaped completions currently
2073 * on the specified CQ.
2074 * @cq: The CQ to peek.
2075 * @wc_cnt: A minimum number of unreaped completions to check for.
2077 * If the number of unreaped completions is greater than or equal to wc_cnt,
2078 * this function returns wc_cnt, otherwise, it returns the actual number of
2079 * unreaped completions.
2081 int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
2084 * ib_req_notify_cq - Request completion notification on a CQ.
2085 * @cq: The CQ to generate an event for.
2087 * Must contain exactly one of %IB_CQ_SOLICITED or %IB_CQ_NEXT_COMP
2088 * to request an event on the next solicited event or next work
2089 * completion at any type, respectively. %IB_CQ_REPORT_MISSED_EVENTS
2090 * may also be |ed in to request a hint about missed events, as
2094 * < 0 means an error occurred while requesting notification
2095 * == 0 means notification was requested successfully, and if
2096 * IB_CQ_REPORT_MISSED_EVENTS was passed in, then no events
2097 * were missed and it is safe to wait for another event. In
2098 * this case is it guaranteed that any work completions added
2099 * to the CQ since the last CQ poll will trigger a completion
2100 * notification event.
2101 * > 0 is only returned if IB_CQ_REPORT_MISSED_EVENTS was passed
2102 * in. It means that the consumer must poll the CQ again to
2103 * make sure it is empty to avoid missing an event because of a
2104 * race between requesting notification and an entry being
2105 * added to the CQ. This return value means it is possible
2106 * (but not guaranteed) that a work completion has been added
2107 * to the CQ since the last poll without triggering a
2108 * completion notification event.
2110 static inline int ib_req_notify_cq(struct ib_cq *cq,
2111 enum ib_cq_notify_flags flags)
2113 return cq->device->req_notify_cq(cq, flags);
2117 * ib_req_ncomp_notif - Request completion notification when there are
2118 * at least the specified number of unreaped completions on the CQ.
2119 * @cq: The CQ to generate an event for.
2120 * @wc_cnt: The number of unreaped completions that should be on the
2121 * CQ before an event is generated.
2123 static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
2125 return cq->device->req_ncomp_notif ?
2126 cq->device->req_ncomp_notif(cq, wc_cnt) :
2131 * ib_get_dma_mr - Returns a memory region for system memory that is
2133 * @pd: The protection domain associated with the memory region.
2134 * @mr_access_flags: Specifies the memory access rights.
2136 * Note that the ib_dma_*() functions defined below must be used
2137 * to create/destroy addresses used with the Lkey or Rkey returned
2138 * by ib_get_dma_mr().
2140 struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
2143 * ib_dma_mapping_error - check a DMA addr for error
2144 * @dev: The device for which the dma_addr was created
2145 * @dma_addr: The DMA address to check
2147 static inline int ib_dma_mapping_error(struct ib_device *dev, u64 dma_addr)
2150 return dev->dma_ops->mapping_error(dev, dma_addr);
2151 return dma_mapping_error(dev->dma_device, dma_addr);
2155 * ib_dma_map_single - Map a kernel virtual address to DMA address
2156 * @dev: The device for which the dma_addr is to be created
2157 * @cpu_addr: The kernel virtual address
2158 * @size: The size of the region in bytes
2159 * @direction: The direction of the DMA
2161 static inline u64 ib_dma_map_single(struct ib_device *dev,
2162 void *cpu_addr, size_t size,
2163 enum dma_data_direction direction)
2166 return dev->dma_ops->map_single(dev, cpu_addr, size, direction);
2167 return dma_map_single(dev->dma_device, cpu_addr, size, direction);
2171 * ib_dma_unmap_single - Destroy a mapping created by ib_dma_map_single()
2172 * @dev: The device for which the DMA address was created
2173 * @addr: The DMA address
2174 * @size: The size of the region in bytes
2175 * @direction: The direction of the DMA
2177 static inline void ib_dma_unmap_single(struct ib_device *dev,
2178 u64 addr, size_t size,
2179 enum dma_data_direction direction)
2182 dev->dma_ops->unmap_single(dev, addr, size, direction);
2184 dma_unmap_single(dev->dma_device, addr, size, direction);
2187 static inline u64 ib_dma_map_single_attrs(struct ib_device *dev,
2188 void *cpu_addr, size_t size,
2189 enum dma_data_direction direction,
2190 struct dma_attrs *attrs)
2192 return dma_map_single_attrs(dev->dma_device, cpu_addr, size,
2196 static inline void ib_dma_unmap_single_attrs(struct ib_device *dev,
2197 u64 addr, size_t size,
2198 enum dma_data_direction direction,
2199 struct dma_attrs *attrs)
2201 return dma_unmap_single_attrs(dev->dma_device, addr, size,
2206 * ib_dma_map_page - Map a physical page to DMA address
2207 * @dev: The device for which the dma_addr is to be created
2208 * @page: The page to be mapped
2209 * @offset: The offset within the page
2210 * @size: The size of the region in bytes
2211 * @direction: The direction of the DMA
2213 static inline u64 ib_dma_map_page(struct ib_device *dev,
2215 unsigned long offset,
2217 enum dma_data_direction direction)
2220 return dev->dma_ops->map_page(dev, page, offset, size, direction);
2221 return dma_map_page(dev->dma_device, page, offset, size, direction);
2225 * ib_dma_unmap_page - Destroy a mapping created by ib_dma_map_page()
2226 * @dev: The device for which the DMA address was created
2227 * @addr: The DMA address
2228 * @size: The size of the region in bytes
2229 * @direction: The direction of the DMA
2231 static inline void ib_dma_unmap_page(struct ib_device *dev,
2232 u64 addr, size_t size,
2233 enum dma_data_direction direction)
2236 dev->dma_ops->unmap_page(dev, addr, size, direction);
2238 dma_unmap_page(dev->dma_device, addr, size, direction);
2242 * ib_dma_map_sg - Map a scatter/gather list to DMA addresses
2243 * @dev: The device for which the DMA addresses are to be created
2244 * @sg: The array of scatter/gather entries
2245 * @nents: The number of scatter/gather entries
2246 * @direction: The direction of the DMA
2248 static inline int ib_dma_map_sg(struct ib_device *dev,
2249 struct scatterlist *sg, int nents,
2250 enum dma_data_direction direction)
2253 return dev->dma_ops->map_sg(dev, sg, nents, direction);
2254 return dma_map_sg(dev->dma_device, sg, nents, direction);
2258 * ib_dma_unmap_sg - Unmap a scatter/gather list of DMA addresses
2259 * @dev: The device for which the DMA addresses were created
2260 * @sg: The array of scatter/gather entries
2261 * @nents: The number of scatter/gather entries
2262 * @direction: The direction of the DMA
2264 static inline void ib_dma_unmap_sg(struct ib_device *dev,
2265 struct scatterlist *sg, int nents,
2266 enum dma_data_direction direction)
2269 dev->dma_ops->unmap_sg(dev, sg, nents, direction);
2271 dma_unmap_sg(dev->dma_device, sg, nents, direction);
2274 static inline int ib_dma_map_sg_attrs(struct ib_device *dev,
2275 struct scatterlist *sg, int nents,
2276 enum dma_data_direction direction,
2277 struct dma_attrs *attrs)
2279 return dma_map_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
2282 static inline void ib_dma_unmap_sg_attrs(struct ib_device *dev,
2283 struct scatterlist *sg, int nents,
2284 enum dma_data_direction direction,
2285 struct dma_attrs *attrs)
2287 dma_unmap_sg_attrs(dev->dma_device, sg, nents, direction, attrs);
2290 * ib_sg_dma_address - Return the DMA address from a scatter/gather entry
2291 * @dev: The device for which the DMA addresses were created
2292 * @sg: The scatter/gather entry
2294 * Note: this function is obsolete. To do: change all occurrences of
2295 * ib_sg_dma_address() into sg_dma_address().
2297 static inline u64 ib_sg_dma_address(struct ib_device *dev,
2298 struct scatterlist *sg)
2300 return sg_dma_address(sg);
2304 * ib_sg_dma_len - Return the DMA length from a scatter/gather entry
2305 * @dev: The device for which the DMA addresses were created
2306 * @sg: The scatter/gather entry
2308 * Note: this function is obsolete. To do: change all occurrences of
2309 * ib_sg_dma_len() into sg_dma_len().
2311 static inline unsigned int ib_sg_dma_len(struct ib_device *dev,
2312 struct scatterlist *sg)
2314 return sg_dma_len(sg);
2318 * ib_dma_sync_single_for_cpu - Prepare DMA region to be accessed by CPU
2319 * @dev: The device for which the DMA address was created
2320 * @addr: The DMA address
2321 * @size: The size of the region in bytes
2322 * @dir: The direction of the DMA
2324 static inline void ib_dma_sync_single_for_cpu(struct ib_device *dev,
2327 enum dma_data_direction dir)
2330 dev->dma_ops->sync_single_for_cpu(dev, addr, size, dir);
2332 dma_sync_single_for_cpu(dev->dma_device, addr, size, dir);
2336 * ib_dma_sync_single_for_device - Prepare DMA region to be accessed by device
2337 * @dev: The device for which the DMA address was created
2338 * @addr: The DMA address
2339 * @size: The size of the region in bytes
2340 * @dir: The direction of the DMA
2342 static inline void ib_dma_sync_single_for_device(struct ib_device *dev,
2345 enum dma_data_direction dir)
2348 dev->dma_ops->sync_single_for_device(dev, addr, size, dir);
2350 dma_sync_single_for_device(dev->dma_device, addr, size, dir);
2354 * ib_dma_alloc_coherent - Allocate memory and map it for DMA
2355 * @dev: The device for which the DMA address is requested
2356 * @size: The size of the region to allocate in bytes
2357 * @dma_handle: A pointer for returning the DMA address of the region
2358 * @flag: memory allocator flags
2360 static inline void *ib_dma_alloc_coherent(struct ib_device *dev,
2366 return dev->dma_ops->alloc_coherent(dev, size, dma_handle, flag);
2371 ret = dma_alloc_coherent(dev->dma_device, size, &handle, flag);
2372 *dma_handle = handle;
2378 * ib_dma_free_coherent - Free memory allocated by ib_dma_alloc_coherent()
2379 * @dev: The device for which the DMA addresses were allocated
2380 * @size: The size of the region
2381 * @cpu_addr: the address returned by ib_dma_alloc_coherent()
2382 * @dma_handle: the DMA address returned by ib_dma_alloc_coherent()
2384 static inline void ib_dma_free_coherent(struct ib_device *dev,
2385 size_t size, void *cpu_addr,
2389 dev->dma_ops->free_coherent(dev, size, cpu_addr, dma_handle);
2391 dma_free_coherent(dev->dma_device, size, cpu_addr, dma_handle);
2395 * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
2397 * @pd: The protection domain associated assigned to the registered region.
2398 * @phys_buf_array: Specifies a list of physical buffers to use in the
2400 * @num_phys_buf: Specifies the size of the phys_buf_array.
2401 * @mr_access_flags: Specifies the memory access rights.
2402 * @iova_start: The offset of the region's starting I/O virtual address.
2404 struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
2405 struct ib_phys_buf *phys_buf_array,
2407 int mr_access_flags,
2411 * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
2412 * Conceptually, this call performs the functions deregister memory region
2413 * followed by register physical memory region. Where possible,
2414 * resources are reused instead of deallocated and reallocated.
2415 * @mr: The memory region to modify.
2416 * @mr_rereg_mask: A bit-mask used to indicate which of the following
2417 * properties of the memory region are being modified.
2418 * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
2419 * the new protection domain to associated with the memory region,
2420 * otherwise, this parameter is ignored.
2421 * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
2422 * field specifies a list of physical buffers to use in the new
2423 * translation, otherwise, this parameter is ignored.
2424 * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
2425 * field specifies the size of the phys_buf_array, otherwise, this
2426 * parameter is ignored.
2427 * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
2428 * field specifies the new memory access rights, otherwise, this
2429 * parameter is ignored.
2430 * @iova_start: The offset of the region's starting I/O virtual address.
2432 int ib_rereg_phys_mr(struct ib_mr *mr,
2435 struct ib_phys_buf *phys_buf_array,
2437 int mr_access_flags,
2441 * ib_query_mr - Retrieves information about a specific memory region.
2442 * @mr: The memory region to retrieve information about.
2443 * @mr_attr: The attributes of the specified memory region.
2445 int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
2448 * ib_dereg_mr - Deregisters a memory region and removes it from the
2449 * HCA translation table.
2450 * @mr: The memory region to deregister.
2452 * This function can fail, if the memory region has memory windows bound to it.
2454 int ib_dereg_mr(struct ib_mr *mr);
2458 * ib_create_mr - Allocates a memory region that may be used for
2459 * signature handover operations.
2460 * @pd: The protection domain associated with the region.
2461 * @mr_init_attr: memory region init attributes.
2463 struct ib_mr *ib_create_mr(struct ib_pd *pd,
2464 struct ib_mr_init_attr *mr_init_attr);
2467 * ib_destroy_mr - Destroys a memory region that was created using
2468 * ib_create_mr and removes it from HW translation tables.
2469 * @mr: The memory region to destroy.
2471 * This function can fail, if the memory region has memory windows bound to it.
2473 int ib_destroy_mr(struct ib_mr *mr);
2476 * ib_alloc_fast_reg_mr - Allocates memory region usable with the
2477 * IB_WR_FAST_REG_MR send work request.
2478 * @pd: The protection domain associated with the region.
2479 * @max_page_list_len: requested max physical buffer list length to be
2480 * used with fast register work requests for this MR.
2482 struct ib_mr *ib_alloc_fast_reg_mr(struct ib_pd *pd, int max_page_list_len);
2485 * ib_alloc_fast_reg_page_list - Allocates a page list array
2486 * @device - ib device pointer.
2487 * @page_list_len - size of the page list array to be allocated.
2489 * This allocates and returns a struct ib_fast_reg_page_list * and a
2490 * page_list array that is at least page_list_len in size. The actual
2491 * size is returned in max_page_list_len. The caller is responsible
2492 * for initializing the contents of the page_list array before posting
2493 * a send work request with the IB_WC_FAST_REG_MR opcode.
2495 * The page_list array entries must be translated using one of the
2496 * ib_dma_*() functions just like the addresses passed to
2497 * ib_map_phys_fmr(). Once the ib_post_send() is issued, the struct
2498 * ib_fast_reg_page_list must not be modified by the caller until the
2499 * IB_WC_FAST_REG_MR work request completes.
2501 struct ib_fast_reg_page_list *ib_alloc_fast_reg_page_list(
2502 struct ib_device *device, int page_list_len);
2505 * ib_free_fast_reg_page_list - Deallocates a previously allocated
2507 * @page_list - struct ib_fast_reg_page_list pointer to be deallocated.
2509 void ib_free_fast_reg_page_list(struct ib_fast_reg_page_list *page_list);
2512 * ib_update_fast_reg_key - updates the key portion of the fast_reg MR
2514 * @mr - struct ib_mr pointer to be updated.
2515 * @newkey - new key to be used.
2517 static inline void ib_update_fast_reg_key(struct ib_mr *mr, u8 newkey)
2519 mr->lkey = (mr->lkey & 0xffffff00) | newkey;
2520 mr->rkey = (mr->rkey & 0xffffff00) | newkey;
2524 * ib_inc_rkey - increments the key portion of the given rkey. Can be used
2525 * for calculating a new rkey for type 2 memory windows.
2526 * @rkey - the rkey to increment.
2528 static inline u32 ib_inc_rkey(u32 rkey)
2530 const u32 mask = 0x000000ff;
2531 return ((rkey + 1) & mask) | (rkey & ~mask);
2535 * ib_alloc_mw - Allocates a memory window.
2536 * @pd: The protection domain associated with the memory window.
2537 * @type: The type of the memory window (1 or 2).
2539 struct ib_mw *ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type);
2542 * ib_bind_mw - Posts a work request to the send queue of the specified
2543 * QP, which binds the memory window to the given address range and
2544 * remote access attributes.
2545 * @qp: QP to post the bind work request on.
2546 * @mw: The memory window to bind.
2547 * @mw_bind: Specifies information about the memory window, including
2548 * its address range, remote access rights, and associated memory region.
2550 * If there is no immediate error, the function will update the rkey member
2551 * of the mw parameter to its new value. The bind operation can still fail
2554 static inline int ib_bind_mw(struct ib_qp *qp,
2556 struct ib_mw_bind *mw_bind)
2558 /* XXX reference counting in corresponding MR? */
2559 return mw->device->bind_mw ?
2560 mw->device->bind_mw(qp, mw, mw_bind) :
2565 * ib_dealloc_mw - Deallocates a memory window.
2566 * @mw: The memory window to deallocate.
2568 int ib_dealloc_mw(struct ib_mw *mw);
2571 * ib_alloc_fmr - Allocates a unmapped fast memory region.
2572 * @pd: The protection domain associated with the unmapped region.
2573 * @mr_access_flags: Specifies the memory access rights.
2574 * @fmr_attr: Attributes of the unmapped region.
2576 * A fast memory region must be mapped before it can be used as part of
2579 struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
2580 int mr_access_flags,
2581 struct ib_fmr_attr *fmr_attr);
2584 * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
2585 * @fmr: The fast memory region to associate with the pages.
2586 * @page_list: An array of physical pages to map to the fast memory region.
2587 * @list_len: The number of pages in page_list.
2588 * @iova: The I/O virtual address to use with the mapped region.
2590 static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
2591 u64 *page_list, int list_len,
2594 return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
2598 * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
2599 * @fmr_list: A linked list of fast memory regions to unmap.
2601 int ib_unmap_fmr(struct list_head *fmr_list);
2604 * ib_dealloc_fmr - Deallocates a fast memory region.
2605 * @fmr: The fast memory region to deallocate.
2607 int ib_dealloc_fmr(struct ib_fmr *fmr);
2610 * ib_attach_mcast - Attaches the specified QP to a multicast group.
2611 * @qp: QP to attach to the multicast group. The QP must be type
2613 * @gid: Multicast group GID.
2614 * @lid: Multicast group LID in host byte order.
2616 * In order to send and receive multicast packets, subnet
2617 * administration must have created the multicast group and configured
2618 * the fabric appropriately. The port associated with the specified
2619 * QP must also be a member of the multicast group.
2621 int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2624 * ib_detach_mcast - Detaches the specified QP from a multicast group.
2625 * @qp: QP to detach from the multicast group.
2626 * @gid: Multicast group GID.
2627 * @lid: Multicast group LID in host byte order.
2629 int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
2632 * ib_alloc_xrcd - Allocates an XRC domain.
2633 * @device: The device on which to allocate the XRC domain.
2635 struct ib_xrcd *ib_alloc_xrcd(struct ib_device *device);
2638 * ib_dealloc_xrcd - Deallocates an XRC domain.
2639 * @xrcd: The XRC domain to deallocate.
2641 int ib_dealloc_xrcd(struct ib_xrcd *xrcd);
2643 struct ib_flow *ib_create_flow(struct ib_qp *qp,
2644 struct ib_flow_attr *flow_attr, int domain);
2645 int ib_destroy_flow(struct ib_flow *flow_id);
2647 static inline int ib_check_mr_access(int flags)
2650 * Local write permission is required if remote write or
2651 * remote atomic permission is also requested.
2653 if (flags & (IB_ACCESS_REMOTE_ATOMIC | IB_ACCESS_REMOTE_WRITE) &&
2654 !(flags & IB_ACCESS_LOCAL_WRITE))
2661 * ib_check_mr_status: lightweight check of MR status.
2662 * This routine may provide status checks on a selected
2663 * ib_mr. first use is for signature status check.
2665 * @mr: A memory region.
2666 * @check_mask: Bitmask of which checks to perform from
2667 * ib_mr_status_check enumeration.
2668 * @mr_status: The container of relevant status checks.
2669 * failed checks will be indicated in the status bitmask
2670 * and the relevant info shall be in the error item.
2672 int ib_check_mr_status(struct ib_mr *mr, u32 check_mask,
2673 struct ib_mr_status *mr_status);
2675 #endif /* IB_VERBS_H */